Double-shaft stirring device capable of realizing bidirectional stirring

Abstract

The utility model discloses a double-shaft stirring device capable of realizing bidirectional stirring. The double-shaft stirring device comprises a driving device and a stirring assembly, the stirring assembly comprises an outer stirring shaft and an inner stirring shaft; the driving device comprises a motor and a gear set, and the gear set comprises a driving shaft connected with the motor; the main driving gear is arranged on the driving shaft; the synchronous transmission gear group is meshed with the main driving gear and drives the inner stirring shaft; the transition transmission gear group is meshed with the synchronous transmission gear group and drives the outer stirring shaft; and the inner stirring shaft and the outer stirring shaft are driven by the synchronous transmission gear group and the transition transmission gear group to reversely rotate. According to the structure, the inner stirring shaft and the outer stirring shaft are reversely rotated and driven through the synchronous transmission gear group and the transition transmission gear group, and meanwhile, the inner stirring blades and the outer stirring blades are matched, so that materials are subjected to shearing force and extrusion force in multiple directions, and the stirring uniformity and efficiency are greatly improved; and the requirement on fine mixing of materials in industrial production can be quickly met.

Description

TECHNICAL FIELD

[0001] The utility model relates to agitating equipment technical field, concretely relates to a double shaft stirring device of two -way stirring can be realized. BACKGROUND

[0002] In many industrial production fields such as chemical industry, food, pharmaceuticals, often need to stir the material mixing to meet the production process requirements.The traditional stirring device usually adopts single shaft stirring mode, and this mode has the problems such as uneven stirring, low efficiency, and is difficult to meet the demand of large-scale production and high-quality products.Part of double shaft stirring device improves stirring effect to some extent, but there are still deficiencies in structure design, power transmission and stability of stirring shaft, which affects the reliability and service life of the equipment.Therefore, it has important practical significance to develop a kind of double shaft stirring device of high efficiency, stability and two -way stirring can be realized. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problem, the utility model provides a double shaft stirring device of two -way stirring can be realized.

[0004] The utility model discloses a technical scheme: including drive arrangement and stirring subassembly;The stirring subassembly includes outer stirring shaft and inner stirring shaft;The drive arrangement includes motor and gear set, and the gear set includes the drive shaft that is connected with the motor;The main drive gear is established on the drive shaft;The synchronous transmission gear that is engaged with the main drive gear and drives the inner stirring shaft;The transition transmission gear that is engaged with the synchronous transmission gear and drives the outer stirring shaft;The inner stirring shaft and the outer stirring shaft are driven under the synchronous transmission gear and the transition transmission gear and rotate reversely.

[0005] Preferably, the synchronous transmission gear includes the primary gear that is engaged with the main drive gear, the inner drive gear that drives the inner stirring shaft to rotate, and the secondary gear that is engaged with the inner drive gear, and the secondary gear is drivingly connected with the primary gear through the first transmission shaft.

[0006] Preferably, the transition transmission gear includes the transition gear that is engaged with the primary gear, the outer drive gear that drives the outer stirring shaft to rotate, and the driven gear that is engaged with the outer drive gear, and the transition gear is drivingly connected with the driven gear through the transition transmission shaft.

[0007] Preferably, the outer stirring shaft is in the structure of hollow pipe, the inner stirring shaft is nested in the hollow interior of the outer stirring shaft and is coaxially installed with the outer stirring shaft.

[0008] Preferably, the axial extension length of the inner stirring shaft in the stirring container is greater than that of the outer stirring shaft, and a plurality of inner stirring paddles are arranged on the outer circumferential side of the extended section of the inner stirring shaft;A plurality of outer stirring paddles are arranged on the outer circumferential side of the outer stirring shaft.

[0009] Preferably, the inner stirring shaft adopts a segmented shaft body connection design, comprising an upper half shaft and a lower half shaft, and a spline shaft is arranged at the connection position of the upper half shaft and the lower half shaft.

[0010] Preferably, the outer stirring shaft adopts a segmented shaft body connection design, comprising an upper half shaft and a lower half shaft, the upper half shaft is connected with the upper flange, the lower half shaft is connected with the lower flange, and the upper flange and the lower flange are connected through bolts.

[0011] Preferably, a bearing assembly is arranged between the lower half shaft of the inner stirring shaft and the lower half shaft of the outer stirring shaft at the connection position of the lower flange, and the bearing assembly comprises a tapered roller bearing.

[0012] Preferably, the inner stirring shaft is supported and positioned by the seventh bearing and the eighth bearing arranged on both sides of the inner driving gear.

[0013] Preferably, the outer stirring shaft is supported and positioned by the eighth bearing and the ninth bearing arranged on both sides of the outer driving gear.

[0014] The beneficial technical effects of the utility model are as follows: through the synchronous transmission gear set and the transition transmission gear set design, the power of the motor can be accurately transmitted to the inner and outer stirring shafts, the stable rotation of the double shafts is ensured, and the energy loss and vibration in the power transmission process are reduced. Meanwhile, the primary gear of the synchronous transmission gear set is engaged with the transition gear of the transition transmission gear set, so that the reverse rotation driving of the inner and outer stirring shafts is realized, and the inner and outer stirring blades are matched, so that the material is subjected to multi-directional shearing force and extrusion force, the uniformity and efficiency of stirring are greatly improved, the requirement for fine mixing of the material in industrial production can be quickly met. The inner and outer stirring shafts adopt the segmented shaft body connection design, so that the installation, disassembly and maintenance are facilitated, the overall structure is compact, and the stability is good. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic view of the utility model;

[0016] Figure 2 is the stirring assembly structure schematic view of the utility model;

[0017] Figure 3 is the A-A view of the utility model; Figure 1

[0018] Figure 4 is the bearing support structure installation position schematic view of the utility model;

[0019] Figure 5 is the partial sectional view schematic view of the utility model; Figure 1

[0020] ​​Wherein: 1, stirring container; 2, drive device; 21, motor; 22, main drive gear; 23, synchronous transmission gear set; 231, primary gear; 232, inner drive gear; 233, secondary gear; 234, first transmission shaft; 24, transition transmission gear set; 241, transition gear; 242, outer drive gear; 243, driven gear; 244, transition transmission shaft; 3, stirring assembly; 31, inner stirring shaft; 311, inner shaft upper half shaft; 312, inner shaft lower half shaft; 32, outer stirring shaft; 321, outer shaft upper half shaft; 322, outer shaft lower half shaft; 33, inner stirring paddle; 34, outer stirring paddle; 4, bearing support structure; 41, No. 1 bearing; 42, No. 2 bearing; 43, No. 3 bearing; 44, No. 4 bearing; 45, No. 5 bearing; 46, No. 6 bearing; 47, No. 7 bearing; 48, No. 8 bearing; 49, No. 9 bearing; 50, tapered roller bearing; 5, oil seal; 6, mechanical seal; 7, shaft seal. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the specific embodiments of the utility model are further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0022] As Figure 1 And Figure 2 The utility model discloses a two -axis stirring device of bidirectional stirring can be realized, including stirring container 1, the drive device 2 of setting at stirring container 1 top and the stirring assembly 3 of the material in stirring container 1 is stirred under the drive of drive device 2.

[0023] The stirring assembly 3 includes the inner stirring shaft 31 and the outer stirring shaft 32 through the top of the stirring container 1, the outer stirring shaft 32 is hollow tubular structure, the inner stirring shaft 31 is nested in the hollow interior of the outer stirring shaft 32, and is coaxially installed with the outer stirring shaft 32, ensure the concentricity and stability in the running process, effectively avoid the vibration, wear and tear and other problems caused by eccentricity.

[0024] The axial extension length of the inner stirring shaft 31 in the stirring container 1 is greater than the outer stirring shaft 32, and a plurality of inner stirring paddles 33 are arranged on the outer circumferential side of the extended section of the inner stirring shaft 31.

[0025] As Figure 3The driving device 2 comprises a motor 21, a gear box is connected to the output end of the motor 21, a gear set is arranged in the gear box, and the driving shaft of the gear set is drivingly connected with the shaft of the motor 21 through a shaft coupling. The gear set comprises a main driving gear 22 fixed on the driving shaft, a synchronous transmission gear set 23 meshing with the main driving gear 22 and driving an inner stirring shaft 31, a transition transmission gear set 24 meshing with the synchronous transmission gear set 23 and driving an outer stirring shaft 32, and the inner stirring shaft 31 and the outer stirring shaft 32 rotate reversely under the driving of the synchronous transmission gear set 23 and the transition transmission gear set 24.

[0026] Specifically, the synchronous transmission gear set 23 comprises a primary gear 231 meshing with the main driving gear 22, an inner driving gear 232 driving the inner stirring shaft 31 to rotate, and a secondary gear 233 meshing with the inner driving gear 232, wherein the secondary gear 233 is drivingly connected with the primary gear 231 through a first transmission shaft 234.

[0027] The transition transmission gear set 24 comprises a transition gear 241 meshing with the primary gear 231, an outer driving gear 242 driving the outer stirring shaft 32 to rotate, and a driven gear 243 meshing with the outer driving gear, wherein the transition gear 241 is drivingly connected with the driven gear 243 through a transition transmission shaft 244. The outer driving gear 242 and the inner driving gear 232 are coaxially arranged, and the outer driving gear 242 and the inner driving gear 232 are respectively used for driving the outer stirring shaft 32 and the inner stirring shaft 31 to rotate.

[0028] Under the power of the main driving gear 22, the inner driving gear 232 is driven by the synchronous transmission gear set 23 to drive the inner stirring shaft 31 to rotate, and at the same time, the outer driving gear 242 is driven by the transition transmission gear set 24 to drive the outer stirring shaft 32 to rotate. Since the primary gear 231 and the transition gear 241 are meshed and rotate in opposite directions, the inner stirring shaft 31 and the outer stirring shaft 32 driven by the inner driving gear 232 and the outer driving gear 242 respectively rotate in opposite directions. Correspondingly, the inner stirring blade 33 and the outer stirring blade 34 rotating with the inner stirring shaft 31 and the outer stirring shaft 32 respectively also rotate reversely, so that the material is subjected to shearing force and extrusion force from different directions during the stirring process, thereby realizing rapid and uniform stirring of the material.

[0029] Further, a bearing support structure 4 is further arranged on the driving device 2, like Figure 4The bearing support structure 4 includes a first bearing 41 and a second bearing 42 located on both sides of the main drive gear 22, which is used to realize the support and positioning of the drive shaft, so as to ensure the stable rotation of the main drive gear 22 on the drive shaft; the third bearing 43 and the fourth bearing 44 are located on both sides of the first transmission shaft 234, which is used to realize the support and positioning of the first transmission shaft 234, so as to ensure that the primary gear 231 and the secondary gear 233 remain stable and fixed when the first transmission shaft 234 rotates; the fifth bearing 45 and the sixth bearing 46 are located on both sides of the transition transmission shaft 244, which is used to realize the support and positioning of the transition transmission shaft 244, so as to ensure the stable rotation of the transition gear 241 and the driven gear 243; the seventh bearing 47 and the eighth bearing 48 are located on both sides of the inner drive gear 232 to realize the support and positioning, so as to realize the stable rotation of the inner drive gear 232 driving the inner stirring shaft 31; the eighth bearing 48 is located in the bearing chamber of the outer drive gear 242, which saves space, and at the same time, the eighth bearing 48 provides support for the outer stirring shaft 32; the ninth bearing 49 is located below the outer drive gear 242, and the ninth bearing 49 cooperates with the eighth bearing 48 to provide support and positioning for the outer stirring shaft 32.

[0030] The connecting parts of the corresponding components of the structure are all provided with sealing protection. Specifically, the outer stirring shaft 32 is connected at the bottom of the gear box, and the sealing is achieved by using an oil seal 5; the outer stirring shaft 32 penetrates the top of the stirring container 1, and the sealing is achieved by using a mechanical seal 6 to prevent the lubricating oil from leaking.

[0031] The inner stirring shaft 31 and the outer stirring shaft 32 are sealed by a shaft seal 7 to prevent the material in the stirring container 1 from leaking to the outside environment through the gap between the inner stirring shaft 31 and the outer stirring shaft 32, ensuring the sealing performance of the material during stirring, reducing the loss of the material and the risk of environmental pollution.

[0032] Further, the inner stirring shaft 31 and the outer stirring shaft 32 are designed by segmenting the shaft body to facilitate installation and disassembly, and to reduce the difficulty of maintenance. Specifically, as shown in Figure 5 The inner stirring shaft 31 includes an inner shaft upper half shaft 311 and an inner shaft lower half shaft 312, and the connection between the inner shaft lower half shaft 312 and the inner shaft upper half shaft 311 adopts a spline shaft to realize the circumferential fixation and torque transmission between the inner shaft lower half shaft 312 and the inner shaft upper half shaft 311.

[0033] The outer stirring shaft 32 includes an outer shaft upper half shaft 321 and an outer shaft lower half shaft 322, the outer shaft upper half shaft 321 is connected with an upper flange, the outer shaft lower half shaft 322 is connected with a lower flange, and the upper flange and the lower flange are connected by bolts. The connection structure of the upper flange and the lower flange can provide high connection strength and rigidity, and can withstand the large radial force and axial force of the outer stirring shaft 32 during stirring.

[0034] Further, a bearing assembly is arranged between the inner shaft lower half shaft 312 and the outer shaft lower half shaft 322 at the lower flange connection, and the bearing assembly comprises a tapered roller bearing 50. The design can ensure that the two shafts rotate coaxially for a long time, and better bear the radial and axial loads of the two shafts during stirring. The upper part of the tapered roller bearing 50 is axially fixed by a bearing lock nut and a bearing gland, and the lower part is filled with a seal to prevent material from entering the inside of the tapered roller bearing 50.

[0035] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A twin-shaft stirring device capable of bidirectional stirring, characterized in that: include: Drive unit (2) and stirring assembly (3); The stirring assembly (3) includes an outer stirring shaft (32) and an inner stirring shaft (31); The drive device (2) includes a motor (21) and a gear set, the gear set including: The drive shaft connected to the motor (21); The main drive gear (22) is mounted on the drive shaft; Synchronous transmission gear set (23) meshes with the main drive gear (22) and drives the inner stirring shaft (31); The transition transmission gear set (24) meshes with the synchronous transmission gear set (23) and drives the external stirring shaft (32); The inner stirring shaft (31) and the outer stirring shaft (32) rotate in opposite directions under the drive of the synchronous transmission gear set (23) and the transition transmission gear set (24).

2. The twin-shaft stirring device capable of bidirectional stirring according to claim 1, characterized in that: The synchronous transmission gear set (23) includes a primary gear (231) meshing with the main drive gear (22), an inner drive gear (232) driving the inner stirring shaft (31) to rotate, and a secondary gear (233) meshing with the inner drive gear (232). The secondary gear (233) and the primary gear (231) are connected by a first transmission shaft (234).

3. A twin-shaft stirring device capable of bidirectional stirring according to claim 2, characterized in that: The transition transmission gear set (24) includes a transition gear (241) meshing with the primary gear (231), an external drive gear (242) driving the external stirring shaft (32) to rotate, and a driven gear (243) meshing with the external drive gear. The transition gear (241) and the driven gear (243) are connected by a transition transmission shaft (244).

4. A twin-shaft stirring device capable of bidirectional stirring according to claim 1, characterized in that: The outer stirring shaft (32) has a hollow tubular structure, and the inner stirring shaft (31) is nested inside the hollow interior of the outer stirring shaft (32) and is coaxially installed with the outer stirring shaft (32).

5. A twin-shaft stirring device capable of bidirectional stirring according to claim 4, characterized in that: The axial extension length of the inner stirring shaft (31) in the stirring container (1) is greater than that of the outer stirring shaft (32), and a number of inner stirring blades (33) are provided on the outer periphery of its extension section; a number of outer stirring blades (34) are provided on the outer periphery of the outer stirring shaft (32).

6. A twin-shaft stirring device capable of bidirectional stirring according to claim 1, characterized in that: The inner stirring shaft (31) adopts a segmented shaft connection design, including an upper inner shaft (311) and a lower inner shaft (312). The connection between the lower inner shaft (312) and the upper inner shaft (311) is a spline shaft.

7. A twin-shaft stirring device capable of bidirectional stirring according to claim 1, characterized in that: The outer stirring shaft (32) adopts a segmented shaft connection design, including an upper half shaft (321) and a lower half shaft (322). The upper half shaft (321) is connected to the upper flange, and the lower half shaft (322) is connected to the lower flange. The upper flange and the lower flange are connected by bolts.

8. A twin-shaft stirring device capable of bidirectional stirring according to claim 7, characterized in that: A bearing assembly is provided between the inner lower shaft half (312) and the outer lower shaft half (322) located at the lower flange connection, the bearing assembly including a tapered roller bearing (50).

9. A twin-shaft stirring device capable of bidirectional stirring according to claim 2, characterized in that: The inner stirring shaft (31) is supported and positioned by bearings No. 7 (47) and No. 8 (48) located on both sides of the inner drive gear (232).

10. A twin-shaft stirring device capable of bidirectional stirring according to claim 4, characterized in that: The outer stirring shaft (32) is supported and positioned by bearing No. 8 (48) and bearing No. 9 (49) located on both sides of the outer drive gear (242).

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